"I'm so excited about that. I've seen her live a few times, and every time she does the jazz solo, just her and her voice and the pianoâ€¦" she said.

Jessie J added that she'd "love" to collaborate with the 'Do What U Want' star to get an insight into how she works.

"I'd love to work with her just to see how she thinks. To have that much independence and confidence [about being] so far away from the normality of what people expect; it's very dreamy," she explained.